diff options
Diffstat (limited to 'Documentation/cpu-freq')
| -rw-r--r-- | Documentation/cpu-freq/cpufreq-stats.txt | 10 | ||||
| -rw-r--r-- | Documentation/cpu-freq/governors.txt | 12 |
2 files changed, 11 insertions, 11 deletions
diff --git a/Documentation/cpu-freq/cpufreq-stats.txt b/Documentation/cpu-freq/cpufreq-stats.txt index 6a82948ff4b..53d62c1e1c9 100644 --- a/Documentation/cpu-freq/cpufreq-stats.txt +++ b/Documentation/cpu-freq/cpufreq-stats.txt @@ -1,5 +1,5 @@ - CPU frequency and voltage scaling statictics in the Linux(TM) kernel + CPU frequency and voltage scaling statistics in the Linux(TM) kernel L i n u x c p u f r e q - s t a t s d r i v e r @@ -18,8 +18,8 @@ Contents 1. Introduction cpufreq-stats is a driver that provices CPU frequency statistics for each CPU. -This statistics is provided in /sysfs as a bunch of read_only interfaces. This -interface (when configured) will appear in a seperate directory under cpufreq +These statistics are provided in /sysfs as a bunch of read_only interfaces. This +interface (when configured) will appear in a separate directory under cpufreq in /sysfs (<sysfs root>/devices/system/cpu/cpuX/cpufreq/stats/) for each CPU. Various statistics will form read_only files under this directory. @@ -53,7 +53,7 @@ drwxr-xr-x 3 root root 0 May 14 15:58 .. This gives the amount of time spent in each of the frequencies supported by this CPU. The cat output will have "<frequency> <time>" pair in each line, which will mean this CPU spent <time> usertime units of time at <frequency>. Output -will have one line for each of the supported freuencies. usertime units here +will have one line for each of the supported frequencies. usertime units here is 10mS (similar to other time exported in /proc). -------------------------------------------------------------------------------- @@ -115,7 +115,7 @@ basic statistics which includes time_in_state and total_trans. "CPU frequency translation statistics details" (CONFIG_CPU_FREQ_STAT_DETAILS) provides fine grained cpufreq stats by trans_table. The reason for having a -seperate config option for trans_table is: +separate config option for trans_table is: - trans_table goes against the traditional /sysfs rule of one value per interface. It provides a whole bunch of value in a 2 dimensional matrix form. diff --git a/Documentation/cpu-freq/governors.txt b/Documentation/cpu-freq/governors.txt index f4b8dc4237e..6a9c55bd556 100644 --- a/Documentation/cpu-freq/governors.txt +++ b/Documentation/cpu-freq/governors.txt @@ -57,7 +57,7 @@ selected for each specific use. Basically, it's the following flow graph: -CPU can be set to switch independetly | CPU can only be set +CPU can be set to switch independently | CPU can only be set within specific "limits" | to specific frequencies "CPUfreq policy" @@ -109,7 +109,7 @@ directory. 2.4 Ondemand ------------ -The CPUfreq govenor "ondemand" sets the CPU depending on the +The CPUfreq governor "ondemand" sets the CPU depending on the current usage. To do this the CPU must have the capability to switch the frequency very quickly. There are a number of sysfs file accessible parameters: @@ -137,11 +137,11 @@ have to be made in a row before the CPU frequency is actually lower. If set to '1' then the frequency decreases as quickly as it increases, if set to '2' it decreases at half the rate of the increase. -ignore_nice_load: this parameter takes a value of '0' or '1', when set -to '0' (its default) then all processes are counted towards towards the -'cpu utilisation' value. When set to '1' then processes that are +ignore_nice_load: this parameter takes a value of '0' or '1'. When +set to '0' (its default), all processes are counted towards the +'cpu utilisation' value. When set to '1', the processes that are run with a 'nice' value will not count (and thus be ignored) in the -overal usage calculation. This is useful if you are running a CPU +overall usage calculation. This is useful if you are running a CPU intensive calculation on your laptop that you do not care how long it takes to complete as you can 'nice' it and prevent it from taking part in the deciding process of whether to increase your CPU frequency. |